2. Is reflexive pronoun. A reflexive pronoun is a special kind of pronoun. It is usually used when the object of a sentence is the same as the subject.Each personal pronoun such as [/B]I, you, and she[/B] has its own reflexive form. (first explication)

Reflexive pronouns are used instead of personal pronouns, when you refer to a noun, identical to the subject expressed in the sentence.(second explication)

Possesive reflexive pronouns in accusative and dative case replace possesive pronouns when the owner (of something) is the subject in the sentence.
They have definite and indefinite forms for long form to masculine, feminine and neuter. For neuter also exists singular and plural forms. And of course have a short form which also is си